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89224-73-7

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89224-73-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89224-73-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,2,2 and 4 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 89224-73:
(7*8)+(6*9)+(5*2)+(4*2)+(3*4)+(2*7)+(1*3)=157
157 % 10 = 7
So 89224-73-7 is a valid CAS Registry Number.

89224-73-7Relevant articles and documents

Tetrazolyl- and carboxamidotetrazolyl-substituted 4H-furo[3,2-b] indoles and anti-allergic use thereof

-

, (2008/06/13)

Novel tetrazolyl- and carboxamidotetrazolyl-substituted 4H-furo[3,2-b] indoles are useful for treating allergies or for treating or ameliorating postmyocardial infarct tissue damage. Also disclosed are methods for preparing said indoles, pharmaceutical compositions containing said indoles and methods for using said pharmaceutical compositions.

Indole Esters as Heterocyclic Synthons. III . Preparation and Reactions of Furoindoles

Unangst, Paul C.,Carethers, Mary E.

, p. 709 - 714 (2007/10/02)

The preparation of furoindoles via Dieckmann cyclization is described.The precursor diesters were obtained from 3-hydroxy-1H-indole-2-carboxylic acid esters and methyl or ethyl bromoacetate.Reactions of the furoindole enolic esters prepared

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